Edinburgh - Wales are still on track for a Six Nations Grand Slam after they beat Scotland 18-11 at Murrayfield on Saturday.

First half tries by wing Josh Adams and centre Jonathan Davies helped Wales absorb a fierce fightback by an injury-battered Scotland to set up a potential tournament clincher against reigning champions Ireland in Cardiff next weekend.

After a week of turmoil in Welsh rugby, with an on-off proposed merger between the Ospreys and the Scarlets, Warren Gatland’s side stretched their record winning run to 13 Test matches with a clinical first half display and a backs to the wall second half defensive effort.

Wales went into the contest without a first half try in this year’s championship but showed early intent, zipping the ball out wide to Adams, whose chip up the right wing was covered by Finn Russell.

It was Scotland, prompted by their razor-sharp flyhalf, who temporarily seized the attacking initiative thereafter and Russell kicked them into a 10th minute lead.

Not that the home side remained in the ascendancy for long. Running through the phases, Wales stretched their defence to breaking point three minutes later, Worcester wing Adams skipping past full back Blair Kinghorn on the left before touching down behind the posts for his third try in as many matches.

Gareth Anscombe’s conversion made it 7-3 to the visitors and, though Russell’s second success at goal fleetingly pegged the deficit, Wales’ New Zealand-born flyhalf nailed his first penalty after 23 minutes to give his side a 10-6 advantage.

The Scots had been obliged to contend with considerable disruption to their personnel, flank Jamie Ritchie leaving the field with a head injury after eight minutes, to be replaced by Hamish Watson, who lasted just five minutes before departing with a blood injury.

The Scots also lost wing Tommy Seymour to a shoulder injury before Wales struck for a second time after 29 minutes.

This time Gatland’s men patiently cranked through 23 phases before centre Jonathan Davies cut through the defensive line to score. Anscombe was off target with the conversion but Wales led 15-6 at the break.

Replacement outside-half Adam Hastings was forced to stand in for the injured Kinghorn at fullback and made a tackle his father Gavin, a Scottish legend in the number 15 shirt, would have been proud of to deny Adams a score.

Wales prop Tomas Francis performed heroics in holding up the ball beyond the tryline to deny lock Grant Gilchrist but the Scottish pressure finally told after 57 minutes.

Taking a deft inside pass from Russell, replacement wing Byron McGuigan cut through the Welsh defence with a diagonal run and Hastings fed the ball on for Graham to score in the right corner. Russell was of target with the conversion but Scotland were back in touch at 11-15.

Graham departed with a hand injury soon after, Greig Laidlaw coming on at scrum half and Ali Price having to shift to the left wing with the number nine shirt on his back.

Despite all of the changes, Scotland upped the pressure in the final quarter but without closing the four-point gap. Indeed, in the final minute, Wales broke out on the counter-attack and Anscombe landed a penalty to seal the victory and move Gatland's side within one step of the Grand Slam.